Report Generated 08/01/2023 at 1508

Page Description

2 - Mean Daily Water Temperature, Release Flow Rates and Air Temperatures with Monthly Averages

3 - Sacramento River Mean Daily Water Temperature Plot

4 - Trinity River Mean Daily Water Temperature Plot

5 - Shasta Lake Isothermobaths & Cold Water Pool Statistics

14 - Trinity Lake Isothermobaths & Cold Water Pool Statistics

23 - Whiskeytown Lake Isothermobaths & Cold Water Pool Statistics

x - TCD Configuration (External Link)

All Data in this Report is Preliminary and Subject to Change

Northern CVP Water Temperature Report

July - 2023
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Jun 8173 107 9002 73.4 73.3

07/01 49.8 ? 48.3 51.0 50.5 51.2 52.1 54.7 57.3 ? 59.7 56.5 53.3 # 65.2 9275 535 9914 92.0 86.2 86.1

07/02 49.9 ? 48.5 51.2 50.4 51.1 52.0 54.6 57.3 59.8 56.5 53.1 # 65.7 9282 574 10409 93.0 86.6 86.7

07/03 49.9 48.5 51.2 50.4 51.2 52.0 54.5 57.0 59.5 56.1 53.3 # 65.2 9542 579 10397 88.0 83.9 83.5

07/04 50.1 ? 48.3 51.1 50.4 51.1 52.0 54.5 57.0 59.5 56.2 53.5 # 65.7 9421 502 10380 87.5 82.0 80.5

07/05 50.3 48.7 51.3 50.4 51.1 52.0 54.4 56.9 59.4 56.3 53.2 # 66.1 9934 515 10391 84.0 78.4 77.0

07/06 50.9 ? 49.2 51.3 # 51.4 52.3 54.7 56.9 58.8 56.2 53.2 # 66.0 9585 569 10390 82.0 77.4 76.0

07/07 50.4 ? 48.9 51.4 # 51.9 52.7 55.0 57.2 59.3 56.1 53.5 # 65.8 9357 547 10395 81.0 75.9 74.3

07/08 50.4 ? 48.7 51.4 51.0 51.8 52.7 55.1 # ? 59.7 56.0 53.7 # 64.9 9394 500 10493 81.5 76.4 74.0

07/09 50.4 49.2 51.4 50.8 51.6 52.5 54.8 # 59.5 56.1 53.9 # 65.1 9541 506 10494 77.0 72.9 70.8

07/10 50.5 ? 49.4 51.5 50.9 51.6 52.4 54.7 # 59.1 55.9 53.8 # 65.0 9794 509 10535 80.5 76.0 74.8

07/11 50.1 ? 48.6 51.5 50.9 51.6 52.4 54.5 56.8 59.1 55.8 53.7 # 65.6 9378 560 10643 83.0 78.5 79.1

07/12 50.5 ? 49.2 51.6 50.7 51.5 52.4 54.6 56.9 59.1 55.9 53.9 # 66.0 9370 491 10575 83.0 79.0 78.9

07/13 49.2 ? 48.0 51.6 50.9 51.5 52.3 54.5 56.6 58.8 55.9 53.8 # 66.5 9498 493 10499 84.5 79.9 78.5

07/14 49.3 # 51.7 50.1 50.8 51.8 54.3 56.6 ? 58.8 56.2 54.2 # 67.4 10053 543 10996 88.5 84.3 83.0

07/15 49.4 # 51.7 49.7 50.3 51.1 53.4 55.9 58.4 56.3 53.3 # 68.2 9998 701 10986 91.5 86.0 85.3

07/16 49.6 # 51.8 49.7 50.4 51.3 53.6 56.0 ? 58.2 56.6 53.0 # 68.5 10005 550 10988 93.5 87.2 87.6

07/17 49.7 # 51.6 50.0 50.7 51.5 53.9 56.4 58.7 57.1 52.9 # 68.0 10374 337 10984 95.0 89.0 90.1

07/18 49.7 # 51.8 49.9 50.5 51.4 53.7 56.1 58.5 56.3 52.9 62.5 68.0 10300 305 10972 88.5 83.0 83.2

07/19 49.7 ? 47.9 51.9 50.0 50.7 51.5 53.5 55.8 ? 58.0 56.0 53.2 62.6 68.1 9682 370 10982 86.0 80.6 79.8

07/20 49.8 ? 48.4 52.0 50.2 50.7 51.5 53.6 55.7 57.8 55.9 53.8 62.7 67.8 10221 309 10722 86.5 81.5 82.0

07/21 ? 49.6 ? 48.2 ? 51.9 ? 50.2 ? 50.8 ? 51.6 ? 53.7 ? 55.8 ? 58.0 ? 56.2 ? 54.6 ? 62.6 ? 67.4 9633 563 10719 ↑ 91.0 86.6 86.0

07/22 49.7 ? 48.1 51.9 50.2 50.8 51.5 53.7 56.0 58.2 56.1 54.5 ? 62.7 67.1 9915 430 10718 ↑ 91.0 87.0 86.9

07/23 49.8 ? 48.2 52.1 50.0 50.5 51.4 53.4 55.5 ? 57.7 55.5 53.7 # 67.3 9684 563 10726 90.0 83.8 85.4

07/24 50.0 48.4 52.1 50.0 50.7 51.5 53.6 55.6 57.7 56.1 53.5 # 66.4 10026 491 10725 83.5 79.5 78.1

07/25 50.0 48.3 52.3 50.4 51.0 51.7 53.7 55.7 57.9 56.2 53.4 # 66.9 9560 501 10739 84.5 79.0 78.8

07/26 49.8 48.2 52.4 50.4 51.0 51.8 53.8 55.9 58.0 56.1 53.6 # 67.9 9896 622 10730 84.5 79.0 80.0

07/27 49.6 48.2 52.6 50.4 51.0 51.9 53.9 56.0 ? 58.2 56.3 53.6 # ? 67.6 9428 516 10741 82.5 78.5 78.6

07/28 49.6 48.3 52.6 50.3 50.9 51.8 53.8 56.0 ? 58.2 56.2 53.9 # 67.0 9846 500 10742 82.0 78.4 77.7

07/29 49.4 48.2 52.7 50.3 50.9 51.8 53.7 55.7 57.8 56.1 54.3 # 67.0 9594 483 10721 81.5 76.4 76.8

07/30 49.7 48.5 52.6 50.2 50.8 51.6 53.6 55.6 57.6 56.0 54.0 # 66.9 10058 355 10733 82.0 76.5 78.0

07/31 49.8 48.5 52.7 50.3 50.9 51.6 53.5 55.4 57.4 56.0 53.6 # 67.1 9909 483 10735 83.0 76.6 77.8

Jul 9721 501 10648 86.0 81.0 80.6

301553 15502 330174

Legend Notes 598118 30748 654887

? = 1-9 hours of data missing (Average includes estimations) 1 Temperatures are weighted averages based on individual penstock flow and temperature

! = 10 or more hours of data missing (Average not calculated) Highlighted cells in the TCD column indicate a TCD change was made on that day

# = Station out of service 2 Current Clear Creek River control point (see page 4 for more details)

↑ = Record high air temperature 3 DGC reporting inorrect water temperatures from 3/14/23 - 7/17/23, and 7/23 -TBD due to 

↓ = Record low air temperature probe being buried in fine sediment

 = Monthly Averages

49.9 48.5 51.8 51.0 54.1

D

A

T

E

50.6 49.0

CCR2 TCD SAC 1 SHD SPP1 KWK

50.8 50.8 51.4 52.2 54.9 57.2

Mean Daily Air 

Temperatures (°F)

RDD

77.4

Total CFS

66.7

Mean Daily 

Release (CFS)

NFH

59.3

Mean Daily Water Temperatures (°F)

53.6

BND IGO

50.3

BSF

51.9 56.3

Total AF

59.1 54.5

RDB

58.6 56.2

LWS

53.6 -

DGC3

-

2
Code Body of Water Location1 CDEC Link River Point Temp. (°F) Begin Date End Date

TCD N/A Shasta Power Plant N/A Sacramento SAC 54.5 06/07/2022 5/14/2023

SHD Sacramento River 0.3 miles downstream of Shasta Power Plant Click Here Sacramento CCR 53.5 05/14/2023 TBD

SPP N/A Spring Creek Power Plant N/A

KWK Sacramento River 0.8 miles downstream of Keswick Dam Click Here

SAC Sacramento River 4.8 miles downstream of Keswick Dam Click Here

CCR Sacramento River 9.7 miles downstream of Keswick Dam Click Here

BSF Sacramento River 25 miles downstream of Keswick Dam Click Here

JLF Sacramento River 34 miles downstream of Keswick Dam Click Here

BND Sacramento River 41 miles downstream of Keswick Dam Click Here Notes

RDB Sacramento River 58 miles downstream of Keswick Dam Click Here

IGO Clear Creek 7.3 miles downstream of Whiskeytown Dam Click Here 1 Distances are approximate

Station Details Water Right Temperature Control Points

40

48

56

64

72

80

88

96

104

112

120

40

42

44

46

48

50

52

54

56

58

60

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Air Temperature (°F)

Water Temperature (°F)

Sacramento River Mean Daily Temperatures

Redding Air (Observed and Forecasted) TCD KWK SAC CCR BSF

3
Code Body of Water Location1 CDEC Link River Point Temp. (°F) Begin Date End Date

LWS Trinity River 1.1 miles downstream of Lewiston Dam Click Here Trinity DGC2 56 Sep-15 Oct-01

DGC Trinity River 19 miles downstream of Lewiston Dam Click Here Trinity NFH 56 Oct-01 Dec-31

NFH Trinity River 38 miles downstream of Lewiston Dam Click Here

 Notes

1 Distances are approximate

2 DGC reporting incorrect water temperatures from 3/14/23 - 7/17/23, 

and 7/23 - TBD due to probe being buried in fine sediment

Station Details Water Right Temperature Control Points

55

61

67

73

79

85

91

97

103

109

115

50

52

54

56

58

60

62

64

66

68

70

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Air Temperature (°F)

Water Temperature (°F)

Trinity River Mean Daily Temperatures

Redding Air (Observed and Forecasted) LWS DGC NFH

4
Updated 07/26/2023 at 1340

Latest Profile Date: 07/26/2023

Page Description

6 - Shasta Lake Isothermobaths Plot

7 - Shasta Lake Cold Water Pool Volume ≤52°F

8 - Shasta Lake Cold Water Pool Volume ≤50°F

9 - Shasta Lake Cold Water Pool Volume ≤48°F

10 - Shasta Lake Cold Water Pool Volume ≤52°F - Percent Exceedances

11 - Shasta Lake Cold Water Pool Volume ≤50°F - Percent Exceedances

12 - Shasta Lake Cold Water Pool Volume ≤48°F - Percent Exceedances

13 - Shasta Lake Cold Water Pool Comparison by Year

Shasta Lake Isothermobaths & Cold Water Pool Statistics

2023

5
6

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Isothermobaths Plot - 2023

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
7

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤52°F

Avg (1998-2022) 2014 2015 2016 2019 2022 2023
8

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤50°F

Avg (1998-2022) 2014 2015 2016 2019 2022 2023
9

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤48°F

Avg (1998-2022) 2014 2015 2016 2019 2022 2023
10

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤52°F - Percent Exceedances (1998-2022)

2023 95 90 75 50 25 10 5
11

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤50°F - Percent Exceedances (1998-2022)

2023 95 90 75 50 25 10 5
12

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤48°F - Percent Exceedances (1998-2022)

2023 95 90 75 50 25 10 5
Jul-26

2023 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

1998 -944 -1174 -1296 1138 -43 -58 -75 58

1999 -749 -752 -709 737 -34 -37 -41 37

2000 -1089 -1215 -1381 1228 -49 -60 -79 63

2001 -1184 -1106 -1004 1098 -53 -55 -58 55

2002 -920 -908 -927 918 -42 -45 -53 47

2003 -1005 -1373 -1464 1280 -45 -68 -84 66

2004 -1326 -1312 -1220 1286 -60 -65 -70 65

2005 -1317 -1362 -1387 1355 -59 -67 -80 69

2006 -732 -829 -944 835 -33 -41 -54 43

2007 -1141 -1083 -999 1074 -51 -53 -57 54

2008 -1473 -1377 -1189 1346 -66 -68 -68 68

2009 -1305 -1243 -1112 1220 -59 -61 -64 61

2010 -536 -709 -897 714 -24 -35 -52 37

2011 -377 -483 -597 486 -17 -24 -34 25

2012 -617 -569 -789 658 -28 -28 -45 34

2013 -1159 -1102 -1022 1094 -52 -54 -59 55

2014 -1682 -1584 -1424 1563 -76 -78 -82 79

2015 -1471 -1446 -1572 1497 -66 -71 -90 76

2016 -485 -542 -1133 720 -22 -27 -65 38

2017 -508 -703 -867 693 -23 -35 -50 36

2018 -733 -834 -1135 901 -33 -41 -65 46

2019 -341 -466 -706 504 -15 -23 -41 26

2020 -1048 -1133 -1269 1150 -47 -56 -73 59

2021 -1645 -1529 -1398 1524 -74 -75 -80 77

2022 -1645 -1527 -1319 1497 -74 -75 -76 75

2023 0 0 0 0 0 0 0 0

∆ TAF % ∆

Shasta Lake Cold Water Pool Comparison by Year (for Specified Date)

Historic - Current (Historic - Current) / Current

13
Updated 07/11/2023 at 2238

Latest Profile Date: 07/11/2023

Page Description

15 - Trinity Lake Isothermobaths Plot

16 - Trinity Lake Cold Water Pool Volume ≤52°F

17 - Trinity Lake Cold Water Pool Volume ≤50°F

18 - Trinity Lake Cold Water Pool Volume ≤48°F

19 - Trinity Lake Cold Water Pool Volume ≤52°F - Percent Exceedances

20 - Trinity Lake Cold Water Pool Volume ≤50°F - Percent Exceedances

21 - Trinity Lake Cold Water Pool Volume ≤48°F - Percent Exceedances

22 - Trinity Lake Cold Water Pool Comparison by Year

Trinity Lake Isothermobaths & Cold Water Pool Statistics

2023

14
15

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Isothermobaths Plot - 2023

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
16

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤52°F

Avg (2000-2022) 2014 2015 2016 2019 2022 2023
17

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤50°F

Avg (2000-2022) 2014 2015 2016 2019 2022 2023
18

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤48°F

Avg (2000-2022) 2014 2015 2016 2019 2022 2023
19

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤52°F - Percent Exceedances (2000-2022)

2023 95 90 75 50 25 10 5
20

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤50°F - Percent Exceedances (2000-2022)

2023 95 90 75 50 25 10 5
21

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤48°F - Percent Exceedances (2000-2022)

2023 95 90 75 50 25 10 5
Jul-11

2023 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

2000 289 264 221 258 31 34 36 34

2001 130 171 199 167 14 22 33 23

2002 105 182 217 168 11 23 36 23

2003 505 409 308 407 54 53 51 52

2004 194 199 152 182 21 26 25 24

2005 274 237 65 192 29 31 11 24

2006 567 561 463 530 60 72 76 70

2007 147 224 275 216 16 29 45 30

2008 -103 -63 -106 90 -11 -8 -17 12

2009 -253 -200 -184 213 -27 -26 -30 28

2010 110 102 -36 83 12 13 -6 10

2011 598 539 417 518 64 69 69 67

2012 432 516 512 487 46 66 85 66

2013 20 94 99 71 2 12 16 10

2014 -440 -319 -218 325 -47 -41 -36 41

2015 -508 -408 -321 413 -54 -53 -53 53

2016 -295 -256 -194 248 -31 -33 -32 32

2017 290 257 233 260 31 33 38 34

2018 169 237 276 227 18 31 46 31

2019 536 575 561 558 57 74 93 75

2020 59 158 147 121 6 20 24 17

2021 -338 -243 -146 242 -36 -31 -24 30

2022 -605 -501 -392 500 -65 -65 -65 65

2023 0 0 0 0 0 0 0 0

Trinity Cold Water Pool Comparison by Year (for Specified Date)

∆ TAF % ∆

Historic - Current (Historic - Current) / Current

22
Updated 07/13/2023 at 1353

Latest Profile Date: 07/13/2023

Page Description

24 - Whiskeytown Lake Isothermobaths Plot

25 - Whiskeytown Lake Cold Water Pool Volume ≤60°F

26 - Whiskeytown Lake Cold Water Pool Volume ≤58°F

27 - Whiskeytown Lake Cold Water Pool Volume ≤56°F

28 - Whiskeytown Lake Cold Water Pool Volume ≤60°F - Percent Exceedances

29 - Whiskeytown Lake Cold Water Pool Volume ≤58°F - Percent Exceedances

30 - Whiskeytown Lake Cold Water Pool Volume ≤56°F - Percent Exceedances

31 - Whiskeytown Lake Cold Water Pool Comparison by Year

Whiskeytown Lake Isothermobaths & Cold Water Pool Statistics

2023

23
24

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Isothermobaths Plot - 2023

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
25

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤60°F

Avg (2000-2022) 2014 2015 2016 2019 2022 2023
26

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤58°F

Avg (2000-2022) 2014 2015 2016 2019 2022 2023
27

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤56°F

Avg (2000-2022) 2014 2015 2016 2019 2022 2023
28

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤60°F - Percent Exceedances (2000-2022)

2023 95 90 75 50 25 10 5
29

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤58°F - Percent Exceedances (2000-2022)

2023 95 90 75 50 25 10 5
30

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤56°F - Percent Exceedances (2000-2022)

2023 95 90 75 50 25 10 5
Jul-13

2023 ≤60° ≤58° ≤56° Abs. Avg. ≤60° ≤58° ≤56° Abs. Avg.

2000 46.4 46.8 41.1 44.8 42.6 47.5 47.6 45.9

2001 43.8 42.5 18.8 35.0 40.2 43.2 21.7 35.0

2002 38.7 37.4 15.1 30.4 35.5 37.9 17.5 30.3

2003 42.2 36.6 23.9 34.2 38.7 37.1 27.6 34.5

2004 41.4 40.5 31.0 37.7 38.0 41.1 35.9 38.4

2005 -0.5 -12.3 -36.2 16.3 -0.4 -12.4 -42.0 18.3

2006 67.0 70.4 56.7 64.7 61.4 71.4 65.6 66.2

2007 38.7 38.7 12.9 30.1 35.5 39.3 14.9 29.9

2008 42.8 41.3 22.6 35.6 39.3 41.9 26.1 35.8

2009 11.9 -12.4 -36.1 20.1 10.9 -12.5 -41.9 21.8

2010 20.5 1.6 -29.0 17.0 18.8 1.6 -33.6 18.0

2011 48.4 44.2 23.2 38.6 44.4 44.9 26.9 38.7

2012 30.4 18.4 -22.7 23.8 27.9 18.7 -26.3 24.3

2013 52.0 51.7 45.8 49.9 47.7 52.5 53.1 51.1

2014 32.4 20.1 -36.0 29.5 29.7 20.4 -41.7 30.6

2015 5.8 -35.5 -41.0 27.4 5.3 -36.0 -47.5 29.6

2016 13.9 5.1 -21.6 13.5 12.8 5.1 -25.0 14.3

2017 46.9 49.3 41.0 45.7 43.0 50.0 47.5 46.8

2018 44.6 31.8 -20.0 32.1 40.9 32.3 -23.2 32.1

2019 37.5 28.9 7.7 24.7 34.4 29.3 9.0 24.2

2020 -5.5 -3.2 0.7 3.1 -5.1 -3.2 0.8 3.0

2021 17.2 -10.4 -56.8 28.1 15.8 -10.6 -65.8 30.7

2022 -16.1 -20.7 -33.4 23.4 -14.7 -21.0 -38.7 24.8

2023 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

∆ TAF % ∆

Whiskeytown Cold Water Pool Comparison by Year (for Specified Date)

Historic - Current (Historic - Current) / Current

31